Car Battery Voltage: Essential Information for Drivers

My friend recently drove his Dongfeng truck, loaded with fruit, from Long Bien Market to his shop in Hai Ba Trung District. Upon reaching Nguyen Van Cu Street, the truck stalled. Panicked, he called for roadside assistance, only to discover the battery was old and depleted. Luckily, a kind motorbike taxi driver directed him to a nearby battery shop, preventing a major traffic jam. This incident highlights the crucial role of a car battery. So, what is the correct voltage for a car battery? Let’s explore this with XE TẢI HÀ NỘI!

What is a Car Battery and What Does it Do?

A car battery, also known as an accumulator, is an essential component of a vehicle’s electrical system. It stores electrical energy to start the engine, power electrical devices when the engine is off, and stabilize the electrical current within the system.

What is the Voltage of a Car Battery?

Typically, a car battery has a nominal voltage of 12V. However, some heavy-duty trucks or specialized vehicles may use a 24V electrical system, utilizing two 12V batteries connected in series.

Why 12V?

12V is chosen for most vehicles because it offers a good balance between performance and safety.

• Performance: 12V provides sufficient power to start the engine and power the vehicle’s electrical accessories.
• Safety: 12V is considered relatively safe for users, minimizing the risk of electric shock.

A Dongfeng truck filled with fruits, driving on a busy street

Common Types of Car Batteries

Currently, there are three common types of car batteries on the market:

• Flooded Lead-Acid Batteries: Affordable, require regular maintenance.
• Maintenance-Free Batteries: Require no maintenance, longer lifespan than flooded batteries.
• AGM (Absorbent Glass Mat) Batteries: High performance, superior lifespan, higher cost.

A collection of car batteries, including lead-acid, dry, and AGM batteries

Tips for Car Battery Maintenance

• Regularly inspect and clean the battery.
• Avoid using electrical devices for extended periods when the engine is off.
• Replace the battery when it shows signs of deterioration.